Last Updated：2025/12/29
Sentence
Some
of
the
most
widely-applied
Gresley
features
will
doubtless
long
remain
a
subject
of
controversy
among
locomotive
engineers,
and
in
particular
his
patent
conjugate
valve-motion
for
3-cylinder
engines,
whereby
the
piston-valve
of
the
middle
cylinder
derives
its
motion
from
the
two
outside
Walschaerts
valve-gears.
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Some of the most widely-applied Gresley features will doubtless long remain a subject of controversy among locomotive engineers, and in particular his patent conjugate valve-motion for 3-cylinder engines, whereby the piston-valve of the middle cylinder derives its motion from the two outside Walschaerts valve-gears.
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